We carried out a preliminary investigation of impulsivity in patients with
bipolar I disorder not meeting criteria for active episodes. Barratt Impuls
iveness Scale (BIS-11) scores were significantly higher in bipolar disorder
than in control subjects. Laboratory measurements of impulsivity correlate
d with a BIS-11 score or severity of manic symptoms. Impulsivity in bipolar
disorder may have both stable and state-dependent aspects. (C) 2001 Elsevi
er Science Ireland Ltd. All rights reserved.